EP 0807087 A1 19971119 - WATER PURIFYING MACHINE HAVING MEMBRANE CHAMBER FLUSHING
Title (en)
WATER PURIFYING MACHINE HAVING MEMBRANE CHAMBER FLUSHING
Title (de)
WASSERREINIGUNGSMASCHINE MIT SPÜLUNG DES MEMBRANZIMMER
Title (fr)
MACHINE DE PURIFICATION D'EAU AVEC RIN AGE D'UNE CHAMBRE A MEMBRANE
Publication
Application
Priority
- SE 9600054 W 19960119
- SE 9500338 A 19950131
Abstract (en)
[origin: WO9623733A1] Arrangement for water purification, comprising a pressure vessel (11) containing a filtering membrane device (10) of the reverse osmosis type, a water supply conduit (14) connected to the pressure vessel (11) via a pressure pump (13), a recirculation pump (12) provided in the pressure vessel for recirculating the liquid therein, an outlet (24) for purified water provided on the pressure vessel (11), a return line (23, 15) via a pressure valve (21) connecting the pressure vessel (11) to the inlet of the pressure pump (13), a drain outlet provided on the pressure vessel for dirty water collected in the pressure vessel (11) at the dirty side of the filtering membrane, a drain conduit (27), or the like, connected to the drain outlet and incorporating a flow restrainer (28) connected in parallel with a flush valve (29), and a control device (30) for the flush valve. The arrangement also comprises means (31) adapted for measuring of the conductivity of the purified water, the control device (30) being adapted after each tapping of purified water to open the flush valve (29) for a time period determined by the quotient between the last measured conductivity level and a normal level of conductivity stored in the control device. Beside the arrangement also a method is provided for determining of a flushing time for a pressurized membrane chamber in an arrangement for water purification by means of reverse osmosis.
IPC 1-7
IPC 8 full level
B01D 61/08 (2006.01); B01D 61/12 (2006.01); B01D 65/02 (2006.01); C02F 1/44 (2006.01)
CPC (source: EP US)
B01D 61/08 (2013.01 - EP US); B01D 61/12 (2013.01 - EP); B01D 65/02 (2013.01 - EP); B01D 2321/02 (2013.01 - EP); B01D 2321/04 (2013.01 - EP)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
WO 9623733 A1 19960808; AU 4680696 A 19960821; DE 69602826 D1 19990715; DE 69602826 T2 19991223; EP 0807087 A1 19971119; EP 0807087 B1 19990609; JP H10513111 A 19981215; MY 133641 A 20071130; SE 503918 C2 19960930; SE 9500338 D0 19950131; SE 9500338 L 19960801
DOCDB simple family (application)
SE 9600054 W 19960119; AU 4680696 A 19960119; DE 69602826 T 19960119; EP 96902527 A 19960119; JP 52345596 A 19960119; MY PI9600328 A 19960130; SE 9500338 A 19950131